Hydride Generation Assembly Synchronized Reagent Dispensing
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Solution Overview
Problem
Existing sample introduction systems for ICP spectrometry face challenges in synchronizing the introduction of hydride generation reagents, leading to potential contamination and increased device size due to the use of peristaltic pumps, which require careful calibration and result in longer reagent paths.
Innovation Solution
A hydride generation assembly with interconnected chambers and plungers that are actuated simultaneously to dispense hydride generation reagents directly into a mixing path, reducing the risk of contamination and allowing for a more compact design by eliminating the need for lengthy tubing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peristaltic pumps are used to introduce hydride generation reagents, then the reagents can be delivered to the mixing path, but the device size increases and contamination risk increases due to longer reagent paths
Solution Approach 1:
The patent merges the reagent storage chambers and dispensing mechanisms into a single integrated assembly. The first and second chambers are rigidly connected, and their respective plungers are coupled to a common base, allowing simultaneous actuation. This integration eliminates the need for separate peristaltic pump systems and lengthy tubing, thereby reducing device size and contamination risk while maintaining reliable reagent delivery.
2Ease of operation
If peristaltic pumps are used to introduce hydride generation reagents, then the reagents can be delivered to the mixing path, but the device complexity increases due to calibration requirements
Solution Approach 1:
The patent employs a self-service mechanism where the common base simultaneously actuates both plungers in a coordinated manner. This design inherently maintains the correct reagent delivery ratios without requiring external calibration of separate pump systems. The mechanical coupling through the common base ensures synchronized operation, eliminating the complexity of calibrating and maintaining peristaltic pumps while ensuring ease of operation.
3Measurement precision
If separate chambers and actuators are used for each reagent, then precise control over reagent delivery is achieved, but the device size increases
Solution Approach 1:
The patent combines multiple reagent delivery control mechanisms into a single integrated assembly. The first and second chambers are rigidly connected, and their plungers share a common base for simultaneous actuation. This merging approach maintains precise control over reagent delivery ratios through mechanical coordination while significantly reducing the overall device size compared to using separate actuators and chambers for each reagent.
Data Source
AI summary
The present disclosure is directed to a system and a method for hydride generation. In some embodiments, the system includes an assembly for introducing hydride generation reagents into a mixing path or mixing container, where the assembly includes first chamber configured to contain a first hydride generation reagent and a second chamber configured to contain a second hydride generation reagent. A first plunger is configured to translate within the first chamber and cause a displacement of the first hydride generation reagent, and a second plunger is configured to translate within the second chamber and cause a displacement of the second hydride generation reagent. The assembly further includes base coupling the first plunger and the second plunger together.